Análise da chuva e vazão da bacia hidrográfica do Rio Pardo
Carregando...
Data
2013-05-02
Autores
Chierice Júnior, Natale [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
A presente pesquisa foi realizada com a finalidade de analisar e comparar chuva e vazão que ocorreram na bacia hidrográfica do Rio Pardo, no período de 1974 a 1999, visando avaliar o grau de relação entre a chuva, nesse período, com a vazão do rio principal da bacia, o Pardo. Para desenvolvimento dessa pesquisa foram utilizados como objeto de estudo a vazão diária, média mensal e anual do Rio Pardo e a chuva mensal e anual da bacia desse rio. Para tanto, foram escolhidos trinta e nove séries de dados pluviométricos, referentes aos dados obtidos de postos pluviométricos, distribuídos internamente e externamente à bacia, área de estudo desta Pesquisa. Na área interna, foram vinte e oito postos distribuídos por toda a área da bacia e na externa foram onze, desde que não ultrapassassem dez quilômetros de distância dos limites da área da bacia. As trinta e nove séries escolhidas, de um total de cento e dez, obtidas do Banco de Dados Hidrológicos do Estado de São Paulo, foram aquelas que apresentaram um número menor de falhas de dados e com período concomitante ao período de 1974 a 1999. A série de dados fluviométricos do posto do Rio Pardo, próximo ao exutório da bacia, foi obtida do Banco de Dados do DAEE, enquanto que as outras séries desse mesmo rio foram obtidas do Operador Nacional do Sistema Elétrico – ONS. Às séries de chuva e vazão foi aplicado o Método da Dupla Massa, para verificar a consistência delas. As vazões médias anuais e do período foram estimadas por meio das precipitações médias anuais do período e comparadas com as do posto próximo ao exutório. Dessa comparação resultou um fator de correção que, ao ser aplicado aos valores estimados, criou uma nova relação entre chuva média, na bacia e vazão média no exutório. As curvas de permanência mostraram que a vazão do Rio Pardo respondeu, com o mesmo sinal, às chuvas...
This research was conducted with the purpose of analyzing and comparing rainfall and runoff that occurred in the basin of the Pardo River, within 1974 and 1999 to assess the degree of relationship between rainfall during this period, with the flow of the main river basin, the Pardo River. In order to develop this research we used as study object the daily flow, monthly and annual average of the Pardo River and monthly and annual rainfall in the basin of this river. In this case thirty-nine rainfall series data were chosen, for the data obtained from rain gauge stations distributed internally and externally to the basin the study area of this search. In the inner area twenty-eight stations were distributed within the basin area and eleven external, since it did not exceed ten kilometers away from the limits of the basin area. The thirty-nine series selected from a total of one hundred and ten, obtained from the Hydrological Database from the State of São Paulo, these were the ones which had fewer data failures and concomitant period the period 1974-1999. The fluviometric data series from the station of Pardo River, near the mouth of the basin, were obtained from the DAEE Database, while the other series of this same river were obtained from the National Electric System Operator - ONS. To the series of rainfall and runoff the Dual Mass method was applied to check the consistency of them. The annual flows average and from the period were estimated using the annual average rainfall for the period and compared with the next one close to the mouth of the basin. From this comparison a correction factor resulted that, when applied to estimate values, it created a new relationship between average rainfall in the basin and the average runoff from the mouth of the basin. The retention curves showed that the flow of the Pardo River replied... (Complete abstract click electronic access below)
This research was conducted with the purpose of analyzing and comparing rainfall and runoff that occurred in the basin of the Pardo River, within 1974 and 1999 to assess the degree of relationship between rainfall during this period, with the flow of the main river basin, the Pardo River. In order to develop this research we used as study object the daily flow, monthly and annual average of the Pardo River and monthly and annual rainfall in the basin of this river. In this case thirty-nine rainfall series data were chosen, for the data obtained from rain gauge stations distributed internally and externally to the basin the study area of this search. In the inner area twenty-eight stations were distributed within the basin area and eleven external, since it did not exceed ten kilometers away from the limits of the basin area. The thirty-nine series selected from a total of one hundred and ten, obtained from the Hydrological Database from the State of São Paulo, these were the ones which had fewer data failures and concomitant period the period 1974-1999. The fluviometric data series from the station of Pardo River, near the mouth of the basin, were obtained from the DAEE Database, while the other series of this same river were obtained from the National Electric System Operator - ONS. To the series of rainfall and runoff the Dual Mass method was applied to check the consistency of them. The annual flows average and from the period were estimated using the annual average rainfall for the period and compared with the next one close to the mouth of the basin. From this comparison a correction factor resulted that, when applied to estimate values, it created a new relationship between average rainfall in the basin and the average runoff from the mouth of the basin. The retention curves showed that the flow of the Pardo River replied... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Meteorology, Meteorologia, Chuvas, Escoamento, Chuvas - 1974-1999, Aguas pluviais, Pardo, Rio, Bacia (MG e SP)
Como citar
CHIERICE JÚNIOR, Natale. Análise da chuva e vazão da bacia hidrográfica do Rio Pardo. 2013. 133 f. Tese (doutorado) - Universidade Estadual Paulista Júlio de Mesquita Filho, Instituto de Geociências e Ciências Exatas, 2013.